Ⅳ级星形细胞瘤的MRI征象不包括() ["A.肿瘤增强较显著","B.可以出现胼胝体增粗且TWI呈高信号","C.肿瘤有坏死","D.可以出现室管膜下播散","E.放疗后肿瘤通常明显缩小或消失"]
体重低下(underweight)
生长迟缓(stunting)
脱髓鞘病变不包括() ["A.多发性硬化","B.急性播散性脑炎","C.中心性桥脑溶解","D.橄榄桥脑小脑萎缩","E.渗透性髓鞘溶解"]
对急性咽炎的描述为() ["A.是咽粘膜、粘膜下组织的急性炎症,多不累及淋巴结","B.病因主要为细菌感染","C.全身症状一般较轻","D.无传染性","E.可引起中耳炎、鼻窦炎、急性肾炎等并发症"]
亚临床型维生素A缺乏症